I suppose it depends how and what you want to play. My "fun time" is doing wPvP so PvE content for me is a my "WoW chores" this shows with the fact I'm only ilvl 860 and have been there for around a month.

I have just started a new team of 5x Hunters and so far they are very fun, only level 20 but they seem to level very fast and the DPS seems much better than the 5x Locks I tried.